JP3487952B2 - Drive device and drive control method for electric vehicle - Google Patents

Drive device and drive control method for electric vehicle

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Publication number
JP3487952B2
JP3487952B2 JP8943595A JP8943595A JP3487952B2 JP 3487952 B2 JP3487952 B2 JP 3487952B2 JP 8943595 A JP8943595 A JP 8943595A JP 8943595 A JP8943595 A JP 8943595A JP 3487952 B2 JP3487952 B2 JP 3487952B2
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Japan
Prior art keywords
battery
power
energy
vehicle
current
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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JP8943595A
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Japanese (ja)
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JPH08289410A (en
Inventor
祥太郎 内藤
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株式会社日立製作所
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Priority to JP8943595A priority Critical patent/JP3487952B2/en
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Publication of JP3487952B2 publication Critical patent/JP3487952B2/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00Control systems specially adapted for hybrid vehicles
    • B60W20/10Controlling the power contribution of each of the prime movers to meet required power demand
    • B60W20/13Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/28Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the electric energy storing means, e.g. batteries or capacitors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/32Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the fuel cells
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/02Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles characterised by the form of the current used in the control circuit
    • B60L15/025Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles characterised by the form of the current used in the control circuit using field orientation; Vector control; Direct Torque Control [DTC]
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00Electric propulsion with power supplied within the vehicle
    • B60L50/50Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/51Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by AC-motors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/20Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having different nominal voltages
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/40Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for controlling a combination of batteries and fuel cells
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00Conjoint control of vehicle sub-units of different type or different function
    • B60W10/24Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
    • B60W10/26Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00Conjoint control of vehicle sub-units of different type or different function
    • B60W10/28Conjoint control of vehicle sub-units of different type or different function including control of fuel cells
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M16/00Structural combinations of different types of electrochemical generators
    • H01M16/003Structural combinations of different types of electrochemical generators of fuel cells with other electrochemical devices, e.g. capacitors, electrolysers
    • H01M16/006Structural combinations of different types of electrochemical generators of fuel cells with other electrochemical devices, e.g. capacitors, electrolysers of fuel cells with rechargeable batteries
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00Control systems specially adapted for hybrid vehicles
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/64Electric machine technologies for applications in electromobilty
    • Y02T10/642Control strategies of electric machines for automotive applications
    • Y02T10/643Vector control
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage for electromobility
    • Y02T10/7038Energy storage management
    • Y02T10/7044Controlling the battery or capacitor state of charge
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage for electromobility
    • Y02T10/7038Energy storage management
    • Y02T10/7055Controlling vehicles with more than one battery or more than one capacitor
    • Y02T10/7066Controlling vehicles with more than one battery or more than one capacitor the batteries or capacitors being of a different voltage
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/30Application of fuel cell technology to transportation
    • Y02T90/34Fuel cell powered electric vehicles [FCEV]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S903/00Hybrid electric vehicles, HEVS
    • Y10S903/902Prime movers comprising electrical and internal combustion motors
    • Y10S903/903Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S903/00Hybrid electric vehicles, HEVS
    • Y10S903/902Prime movers comprising electrical and internal combustion motors
    • Y10S903/903Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
    • Y10S903/904Component specially adapted for hev
    • Y10S903/907Electricity storage, e.g. battery, capacitor
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S903/00Hybrid electric vehicles, HEVS
    • Y10S903/902Prime movers comprising electrical and internal combustion motors
    • Y10S903/903Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
    • Y10S903/904Component specially adapted for hev
    • Y10S903/908Fuel cell
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S903/00Hybrid electric vehicles, HEVS
    • Y10S903/902Prime movers comprising electrical and internal combustion motors
    • Y10S903/903Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
    • Y10S903/944Characterized by control of fuel cell
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T307/00Electrical transmission or interconnection systems
    • Y10T307/25Plural load circuit systems
    • Y10T307/305Plural sources of supply
    • Y10T307/313Interconnected for energy transfer
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T307/00Electrical transmission or interconnection systems
    • Y10T307/50Plural supply circuits or sources
    • Y10T307/505One source floats across or compensates for other source
    • Y10T307/511With intervening converter
    • Y10T307/516Storage battery or accumulator-type source

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving device for an electric vehicle.
And the drive control method, especially for the hybrid battery.
Driving an electric vehicle driven by a motor as a power source
The present invention relates to an apparatus and a drive control method. [0002] 2. Description of the Related Art In general, electric vehicles use an on-board DC power supply.
Inverter that converts to variable voltage, variable frequency AC power
And a three-phase AC motor for driving the vehicle, and this three-phase AC motor
Current sensor and speed sensor to detect the current and rotation speed of the machine
And the torque of the three-phase AC motor according to the accelerator opening.
Torque command calculation means for determining a command, and the torque command
And a three-phase AC motor based on the output of the current sensor.
Three-phase to generate three-phase AC current command to control current
AC current command generating means, the three-phase AC current command and
Based on the current flowing through the three-phase AC motor
Signal generating means for generating a signal for controlling the
You. [0003] Such electric vehicles cause air pollution.
That does not emit harmful substances as exhaust gas.
Its use has been expanded as a clean car
It is getting. "Chemical Industry", published December 1992
Pp. 69-74, `` Development trend of batteries for electric vehicles ''
The title introduces the development trend of new batteries. [0004] Generally, secondary batteries are used for electric vehicles.
Batteries, especially lead batteries, are widely used, but secondary batteries are
The mileage per charge is short, which is the
It is a major obstacle in promoting the dissemination. On the other hand, in recent years, electric vehicles for electric vehicles have replaced secondary batteries.
Room temperature, such as a polymer electrolyte fuel cell
Type fuel cells are attracting attention. Fuel cells are fuel
Hydrogen and oxygen react electrochemically to obtain energy
And output power while fuel is supplied.
For a long time. Emissions are also reduced.
Lean. However, normal temperature fuel
The output of the battery is as follows: the output voltage of the unit battery is 1 V, or
Output power is 1W / cmTwoAbout low and low load as well as high
Batteries for electric vehicles that require a wide range of output up to the load
-Has the disadvantage that the output density is small. Therefore, when a large amount of current flows through the motor,
Uses both a fuel cell and a rechargeable battery, and
Charge the secondary battery with the surplus power of the fuel cell and
Hybrid battery that can withstand heavy loads
The technology of Li is disclosed in Japanese Patent Application Laid-Open Nos.
It is shown in No. 0 publication. [0007] SUMMARY OF THE INVENTION The above-mentioned conventional hybrid
According to the battery-powered power supply, batteries for electric vehicles can be used.
To compensate for the weaknesses of secondary batteries and room temperature fuel cells,
A battery that can meet a wide range of output requirements is obtained.
The rated voltage of a secondary battery is usually 300 V,
The rated voltage of the fuel cell is 24V to 96V, generally 48V
It is. Conventional hybrid battery power supply
Large differences in the rated voltage
Driving characteristics and driving distance
There was nothing that was sufficiently satisfactory from the viewpoint of the above. An object of the present invention is to provide a battery for an electric vehicle.
As a hybrid battery that combines a secondary battery and a fuel cell.
Fuel cell and secondary battery
Consider the difference in rated voltage of
The optimal usage pattern ensures that the load on the vehicle is low.
To meet a wide range of output demands from
To provide an electric vehicle drive system with a long possible distance
is there. [0009] SUMMARY OF THE INVENTION The present invention providesDrive the vehicle
Three-phase AC motor and converting DC power to AC power
Both supply the converted AC power to the three-phase AC motor
And the power source of the three-phase AC motor.
And a secondary battery and
Power battery connected to three-phase AC motor, always
Consists of a fuel cell that generates a constant output and through a booster circuit
Energy connected in parallel with the power battery
-DC to the battery and this energy battery
-Connected via a DC converter and
Of the fuel supply reaction product discharge pump
DC constituted by the vehicle auxiliary battery
Power supply and signal generation for generating a control signal for the inverter
Means, a key switch, the power battery, the
Energy battery, the three-phase AC motor or the
Based on any of the converter input currents or voltages.
To control the booster circuit and to supply power to the DC power supply.
Battery current and voltage control to maintain the pressure within a specified range
Step and the power switch is off and the power battery is turned off.
When the charge amount of the battery is below a predetermined value, the booster circuit is turned on.
From the energy battery to the power battery
And the key switch is turned off.
And when the charge amount is larger than the predetermined value,
The charging circuit is turned off to stop the charging, and
The switch is off and the vehicle auxiliary battery is charged
Controls the DC-DC converter when the amount is less than a predetermined value
From the energy battery to
Charge control means for charging the terry,
The battery current / voltage control means is such that the key switch is
On and the vehicle transfers braking energy to the power bar.
The booster circuit when in the regenerative mode for recovering battery
Turn off the operation of the energy battery from the
Stop charging the power batteryCharacterized by
Drive for electric vehicles. [0010]Further, the present invention relates to an air conditioner provided in a vehicle.
Motor, power steering motor and vacuum
Auxiliary equipment, including motors for
It is characterized by being driven as a source. [0011]Furthermore, the present invention relates to an energy battery
Auxiliary connected to the vehicle via a DC-DC converter
Using the battery as a power source and fuel for the energy battery
Driving a feed reaction product discharge pump
You. [0012] [Function] Power battery and energy connected in parallel
-The current of either the battery or the motor
Or the voltage is controlled by the battery current / voltage control means.
Is detected and controlled, and the voltage as a DC power supply is within a predetermined range.
Will be maintained. In addition, the charged amount of the power battery is
When it is below the specified value, the energy battery
Charge the power battery, and the charged amount reaches the predetermined value.
If it is larger than this, stop charging. According to the present invention, light load operation of an electric vehicle is performed.
In this state, the power required to operate the motor is mainly
It is supplied by boosting the voltage from the battery. Electric car negative
As loads increase and more power is needed,
Power from the power battery to the three-phase AC motor
Is done. Further, a low-voltage low
From the energy battery, boost the power
By supplying power to the battery and charging it, low load
Satisfies a wide range of output demand characteristics from
In addition, it is possible to travel for a long time. In particular, power
The driving power of vehicles with large load fluctuations
Used for a long period of time
Energy battery that provides a constant output
By using power, the range that can be traveled is extended and electricity is
The size of the source device can be reduced. Ma
In addition, it can meet a wide range of output demands of vehicles from low load to high load.
As a result, the running characteristics can be improved. [0015] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will now be described with reference to FIG.
The description will be made according to the block diagram of the driving device. Referring to FIG. 1, a main power supply mounted on an electric vehicle
Is the energy battery 1 and power connected in parallel
This is a DC power supply including the battery 2. Energy bag
Terry 1 is a fuel cell that constantly generates a constant output,
A lead battery as a secondary battery is used as the power battery 2.
I have. 3 is an auxiliary bar for backing up the controller 10.
It's a battery. 4 is the current of the energy battery and
Energy battery current / voltage detection to detect voltage
And 5 are power battery current and voltage detectors.
The battery current / voltage detector 6 is an energy battery.
It is a relay for terry. 7 is energy battery 1
To boost the voltage of the battery and charge the power battery 2
Road. 12 is a main contactor for opening and closing the main circuit, 13
Are batteries 1 and 2 using power switching elements.
An inverter that converts the DC power of the
Three-phase AC motor for driving a diesel car, 15 is a key switch, 1
Reference numeral 6 denotes a speed sensor for detecting the rotation speed N of the electric motor 14.
You. Also, 17 (17a, 17b, 17c) is a current sensor.
Three-phase alternating current flowing through the primary winding of the AC motor 14
The primary current i (iu, iv, iw) of the current is detected. 18
Corresponds to the amount of depression when the accelerator is depressed.
This is an accelerator switch that outputs the same output θA. 19 is
Supply fuel to the energy battery 1 and discharge reaction products
It is a pump to get out. The booster circuit 7 controls the energy battery 1
A short-circuiting switching transistor 7b and a reactor
7a and a backflow prevention diode 7c.
The rated voltage of the power battery 2 is 300V, energy
The rated voltage of the battery 1 is 48 V, and the booster circuit 7
And the power VE of the energy battery 1 is
Up to the rated voltage VP of Lee 2 or slightly higher
By boosting the pressure, the energy battery 1
-Three-phase for charging the battery 2 and driving the electric car
It functions as a power supply for the AC motor 14. The controller 10 includes a rotational speed detecting means 2
0, primary frequency command generation means 22, torque command calculation means
30, accelerator opening calculating means 31, vector control calculating means
Stage 32, AC current command generating means 33, current / voltage control means
Stage 40, PWM signal generating means 42 and battery current
It has a voltage control means 44. The controller 10 controls the rotation speed of the motor.
N, motor current i and accelerator opening θA
The torque command Tr is calculated by the torque command calculation means 30 and
The primary angular frequency ω is1*
The AC current command I1Calculate
You. Furthermore, these primary angular frequencies ω1*, AC current command
I1The current / voltage control means 40 and the AC current
Command generation means 33 to control current control, AC voltage command calculation, etc.
Each process is executed, and the PWM signal is
Output a signal. An input driven based on this PWM signal
From the DC voltage of the batteries 1 and 2
A variable frequency, variable voltage three-phase AC voltage is formed,
The torque of AC motor 14 is controlled. The rotational angular velocity detecting means 20 is a velocity sensor
16 from the A-phase and B-phase pulses of the output N
The rotational angular velocity ωr (ω = 2π · N / 60) is detected. G
The torque command calculating means 30 includes an accelerator opening calculating means 31
Amount corresponding to the accelerator depression amount θA obtained by
And the rotation of the motor obtained by the rotation angular velocity detecting means 20
Inputting the angular velocity ωr to the three-phase AC motor 14
A torque command τr is generated. The vector control operation means 32 is an excitation motor
The command im and the motor torque τM are input, and the torque current
An instruction It * is generated. The AC current command generation means 33
Current command I1And primary angular frequency ω1* Based on current and electricity
Current command i * (iu *, iv *, iw) to the pressure control means 40.
*) Occurs. The current / voltage control means 40 outputs a current command
i * and motor current i are input, and motor torque τM is obtained.
To generate reference signals Eu *, Ev *, and Ew *. In the PWM signal generating means 42, the reference signal
(Eu *, Ev *, Ew *) and triangular wave, PWM
A signal is obtained, and based on the PWM signal, the PWM inverter 1
The gate signals of the six power elements that make up the three arms are formed.
To achieve. The battery current / voltage control means 44 includes a battery
Based on the outputs of the battery current / voltage detectors 4 and 5.
Current and power of energy battery 1 and power battery 2
Control so that the pressure is maintained within a predetermined range.
When the voltage exceeds the allowable value or drops below the allowable value
In the case, either the relay 6 or the main contactor 12
To open state, or operate the booster circuit 7 to
Control so that the current and voltage become the allowable values. Details of this control
Details will be described later. FIG. 2 shows a configuration example of the energy battery 1.
Is shown. The energy battery is connected to the fuel reformer 100
It comprises a fuel cell unit 120. Fuel reformer 10
0 means methanol CHThreeOH and / or methane CHFourWhen
Water HTwoBy the reforming reaction of O, HTwoGenerate gas. Fuel electricity
The pond cell section 110 includes a fuel electrode 112, an electrolysis 114, oxygen
The pump 19 includes an electrode 116 and an output unit 118.
H supplied byTwoGas and OTwoUsing gas as raw material,
1 W / cm per cell is applied to the output section 118 by the medium reaction.
TwoA degree of cell output is retrieved. Also, as a result of the reaction
Water H formedTwoO is discharged by the pump 19.
The energy battery 1 always operates as long as the raw material is supplied.
A constant cell output is obtained at the output unit 118. Pump 1
9 is a predetermined condition, which is also set when the key switch 15 is turned off.
Be moved. The details will be described later. FIG. 3 shows the energy battery 1 and the power
This shows the characteristics of the battery. In the present invention, the power
-The voltage VP of the battery 2 is
Higher than the boosted voltage VC up to the range where the current is large
It is configured to maintain a voltage. However, no load
In this state, the boosted voltage VC of the energy battery 1 is
-Set to be higher than the voltage VP of battery 2.
Have been. Therefore, when the electric vehicle is in a light driving state,
The electric power required to operate the motor 14 is mainly energy
Supplied from battery 1. The load on the electric car increases,
When more power is needed, the power
Electric power from the terry 2 is supplied to the electric motor 14. The discharge current of the energy battery 1 is
The voltage is controlled by the booster circuit 7 so as to be equal to or less than the large IEMAX. When the power battery 2 is in a discharged state
Is the power battery 2 by the energy battery 1
Charge. For this purpose, the booster circuit 7 is operated and the main
Open the contactor 12 and open the voltage of the energy battery 1
To supply power to the power battery 2. this
Energy detected by the battery current / voltage detector
So that the current of the battery 1 is less than IEMAX
It is controlled by the circuit 7. Charging the power battery 1
The rate has reached a predetermined value (usually within the range of 90-100%)
In this case, the operation of the booster circuit 7 is turned off, and charging is stopped.
When the charging of the power battery 2 is completed, the relay 6 is turned off.
To At this time, the flow from the energy battery 1
Current is limited to less than IEMAX. Power battery 2
Charging should be performed when the electric car does not require power.
Just do it. Battery current and voltage of the controller 10
The operation of the control means 44 is as shown in FIG. First,
When the key switch 15 is off,
Power battery 2 detected by current / voltage detector 5
Check whether the voltage EP is equal to or higher than a predetermined voltage EPC.
(Step 402). If the specified voltage EPC or more
In the case of, the following control is unnecessary. If the voltage EP of the power battery 2 is
If the constant voltage EPC has not been reached, then the electric car
Check whether or not it is in the regenerative mode to recover braking energy.
Click (step 403). When in regenerative mode,
Higher efficiency of recovering braking energy to power battery 2
To turn off the operation of the booster circuit 7,
The charging by the battery 1 is stopped. Electric car is in regenerative mode
When the power supply is not in
The battery 2 is charged (steps 404 to 406). Next
When the key switch 15 is turned on, the relay 6, the main
With the contactor 12 in a conductive state, the energy battery
1 and the power battery 2 to supply electric power to the motor 14.
Is supplied (steps 408 to 410). At this time, Enel
Limit the current flowing from the battery 1 to less than IEMAX
You. This control is performed by the battery current / voltage detector 4.
Battery current detected below IEMAX
Then, the boosting circuit 7 is driven. (S
Steps 412-416). The operation of the booster circuit 7 will be described with reference to FIG. Boost
The circuit 7 is in the operating state, ie, the switching transistor
As shown in FIG. 7A, the data 7b has a predetermined period T (t1 +
On and off are repeated at t2). Switching transformer
When the register 7b is on, the current of the energy battery
IEb changes as shown in (b) of FIG.
Shorts the energy battery through the transistor 7
b, the current IT flowing through Ib is Imin, Im, as shown in FIG.
varies between ax. Switching transistor 7b
When turned off, the energy battery voltage reactor
7a is superimposed on the voltage, and flows through the reverse current blocking diode 7c.
Supplied to the power battery. Charge current at this time
ICH and charging voltage VC are as shown in FIGS.
Change. The charging voltage VC is the voltage VP of the power battery.
Is charged at some point to a high state that exceeds. The energy battery VE and the charging battery
The relationship between the current ICH and the charging voltage VC is as follows. [0032] (Equation 1)When the energy battery 1 is in a discharged state,
When the voltage is low, the operation of the booster circuit 7 is stopped.
Power from the power battery 2 to the motor 14 only.
Supply. The charging / discharging state of the power battery 2
Power battery detected by terry current / voltage detector 5
When the voltage EP of −2 becomes equal to or higher than the predetermined voltage EPC,
The booster circuit 7 is stopped and the energy battery 1
The charging is stopped (steps 418 to 420). Less than
By the same process as below, the energy
Regarding the battery 1 and the power battery 2,
Control is performed to maintain current and voltage within specified ranges.
You. As described above, the charge amount of the power battery 2
Is less than the predetermined value, the key switch 15 is off and
Also drives the pump 19 to discharge the energy battery 1.
To generate power and charge the power battery 2
Charge when the charge amount of the power battery 2 reaches the predetermined value
To stop. It should be noted that the energy battery 1
Abnormalities such as heat generation or the need to replenish fuel
The relay 6 is turned off. FIG. 6 shows the power battery 2 and the energy.
FIG. 3 is a diagram illustrating charge / discharge characteristics of a battery 1. For example,
When the charging rate of the power battery 2 is 75%, the energy
-Since the voltage of the battery 1 is high, the current iA
-Electric current flows from battery 1 to power battery 2.
You. Where the discharge current iA1 and the charge current iA2 are equal
Thus, the charging current and the discharging current are balanced. The state of charge of the power battery 2
It is detected by the Lee current / voltage detector 5. Figure 7 shows the power
FIG. 4 is a diagram illustrating a method of detecting a state of charge of a battery.
The voltage ViG when the charging current IG flows is detected, and the power back is detected.
Determine the state of charge of Terry. Filling current IG1When the flow
Voltage is ViG1At a, the charging rate is 75%, and the voltage is
ViG1At the time of b, the charging rate is 95%. Similarly, charging
Style IGTwoThe voltage when flowing is ViGTwoWhen a, charge rate 75%
And the voltage is ViGTwoAt the time of b, the charging rate is 95%.
One example of power battery charge control is that the charge rate is
Start charging when the charge falls below 75%, and the charge rate is about 95%
It is better to stop charging when it is time. The electric motor for driving an electric vehicle according to the present invention is
Therefore, a DC motor may be used instead of an AC motor.
No. In addition, a DC power supply is used for AC motors,
The means to convert to frequency AC power is an inverter
Other means may be used. The battery current / voltage control means 44
Energy battery 1 and power battery 2
Control to maintain the current and voltage of the
Method of using outputs of battery current / voltage detectors 4 and 5
And any of the battery current / voltage detectors 4 and 5
And the primary winding of the AC motor 14
Required control information is calculated from the primary current i flowing through
Therefore, control may be performed. For example, battery current
The output of the voltage detector 4 and the primary winding of the AC motor 14
Of the AC motor 14 depending on the primary current i
And the current and voltage status of both batteries 1 and 2
Therefore, the same control as described above can be performed.
You. FIG. 8 shows the hybrid in the embodiment of FIG.
Of the control unit of the battery
It is a figure which shows another Example, 15 is a key switch, 19
0 is an electric motor for an energy battery driven pump, 24 is
It is a DC-DC converter. 120 is the energy
Indicating the load of the energy battery, and the motor 120 for the air conditioner.
a, electric motor for power steering 120b, vacuum
Motor 120c is included. 130 is the energy
-Indicates the battery load relay, and the air conditioner motor
Relay 130a, electric motor relay 1 for power steering
30b, including vacuum motor relay 130c
You. Further motors for energy battery driven pumps
As a relay, a first relay (RLf1) 190a,
A second relay (RLf2) 190b is included. Next, the control of the hybrid battery shown in FIG.
The operation of the device will be described. In this example
Then, the drive pump 19 of the energy battery 1 is activated.
Sometimes, the power battery 2 is used as a power source. Please refer to FIG.
Explaining the operation, before starting, the key switch 15 is
Off for energy battery powered pumps
Motor relay 190 (first relay 190a, second relay 190a
Are in the off state. At startup,
When the switch 15 is turned on, the first relay 190a
Is turned on, and the drive pump 19
Power is supplied to the
The dynamic pump 19 is an energy battery,
Supply the raw material to the pond, and as a result, the energy battery 1
Generate output. Accordingly, the second relay (RLf
2) 190b operates and drives from energy battery 1
While supplying power to the motor of the dynamic pump 19,
From the battery 1 to the power battery 2.
Electricity is applied. Energy battery 1 has enough power
After it occurs, the first relay 190a is turned off.
become. As described above, the startup of the energy battery 1 is performed.
After the operation, the second relay 190b is held by itself. That
Later, the key switch 15 is turned off to stop the operation of the electric car
Operation status of this energy battery
Power detected by the battery current / voltage detector 5
Until the voltage of the battery 2 reaches a predetermined value, the energy
Terry 1 continues to charge power battery 2
It is. The load of the energy battery 1, for example,
Akon motors, power steering motors, vacuum
The motors for the arms are each a load relay,
Motor relay for akon 130a, for power steering
Motor relay 130b, vacuum motor relay 13
0c connected to the energy battery 1
You. Each load corresponds to this energy battery 1.
In addition to the relays that perform
Needless to say, it has a relay to control. The load on these accessories is
-Power is supplied from the battery 1. This is the power
The driving power of the vehicle with large load fluctuation by using the power of the battery 2
Auxiliary equipment, such as air, which is used for
The energy required to obtain a constant output over a long period
-This is for using the power of the battery 1. This
To extend the cruising range and reduce the size of the power supply unit.
Bact can be achieved. Also, from low load to high load
Up to the wide range of output demands of vehicles
Can be good. Note that the DC-DC converter 24 is
Charge the auxiliary battery 3 with the power of the battery 1
You. This charging is controlled by battery current / voltage control means.
44 while monitoring the voltage of the auxiliary battery 3.
Is FIG. 10 shows the energy in the embodiment of FIG.
FIG. 2 is a diagram showing another embodiment of the control unit of the energy battery 1.
It is. In this embodiment, the energy battery 1
Drive pump 19 supplies power to auxiliary battery 3 at startup.
And The operation will be described with reference to FIG.
Before, the key switch 15 was turned off,
A relay 190 for the motor of the battery-powered pump 19
Is in the off state. At startup, key switch 15 is turned on
Then, the relay 190 is turned on and the auxiliary battery 3 is turned on.
Power is supplied to the motor of the drive pump 190 from the
The dynamic pump 19 is an energy battery, that is, a fuel cell.
Raw material, and as a result, energy battery 1
Generate power. With this, energy battery 1
Is charged from the power battery 2. That
Later, the key switch 15 is turned off to stop the operation of the electric car
Operation status of this energy battery
Power detected by the battery current / voltage detector 5
Until the voltage of the battery 2 reaches a predetermined value, the energy
Terry 1 continues to charge power battery 2
It is. The load of the energy battery 1 is as shown in FIG.
As in the case of the above, each load relay, that is, air conditioner
Motor relay 130a, power steering motor
Relay 130b and vacuum motor relay 130c
Connected to the energy battery 1 via
These loads are supplied with power from the energy battery 1.
It is. In addition, the DC-DC converter 24
The auxiliary battery 3 is charged by the power of the battery 1. This
The charge control of the battery is the same as that for the power battery 2.
Thus, the charging battery current / voltage control means 44
It is performed while monitoring the voltage of the auxiliary battery 3,
It continues even if the switch 15 is turned off, and the voltage reaches a predetermined value.
Then, the drive pump 19 is stopped, and the process ends. This example
However, the power of the power battery 2 is
Auxiliary equipment used for both driving forces and with relatively little load fluctuation
For example, an air conditioner with a constant output
Battery 1 power is used. In addition, this embodiment
When the energy battery 1 starts up, the auxiliary battery 3
The power consumption by the drive pump 19 is compared.
It is effective when there are few targets. [0049] According to the present invention, a constant output is always generated.
Energy battery to the power battery
By charging the power by boosting the power,
For a long time while satisfying a wide range of output requirements.
It is possible to run. Also, from low load to high load
To meet a wide range of output demands of vehicles and improve driving characteristics
can do.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an electric vehicle drive control device according to one embodiment of the present invention. FIG. 2 is a diagram showing a configuration example of the energy battery of FIG. FIG. 3 is a diagram showing characteristics of a battery constituting a main power supply. FIG. 4 is a flowchart showing the operation of the battery current / voltage control means of FIG. 1; FIG. 5 is a diagram illustrating the operation of a booster circuit. FIG. 6 is a diagram showing charge and discharge characteristics of a power battery and an energy battery. FIG. 7 is a diagram illustrating a method of detecting a state of charge of a power battery. FIG. 8 is a diagram showing another embodiment of the control unit of the energy battery in the embodiment of FIG. 1; FIG. 9 is a time chart showing the operation of FIG. FIG. 10 is a diagram showing another embodiment of the control unit of the energy battery in the embodiment of FIG. 1; FIG. 11 is a time chart showing the operation of FIG. [Description of Signs] 1 ... Energy battery, 2 ... Power battery, 3
... Auxiliary battery, 7 ... Boost circuit, 12 ... Main contactor, 13 ... Inverter, 14 ... Electric motor, 15 ... Controller, 16 ... Speed sensor, 17 ... Current detector, 18 ... Accelerator switch, 19 ... Shift switch, 20 ... Rotation Speed detection circuit, 30: torque command calculation means, 32: vector control calculation means, 40: motor current / voltage control means, 4
2. PWM signal generating means

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-50-152423 (JP, A) JP-A-63-277470 (JP, A) JP-A-2-33863 (JP, A) JP-A-2-338 168802 (JP, U) Japanese Utility Model Hei 6-124720 (JP, U) (58) Field surveyed (Int. Cl. 7 , DB name) B60L 11/00 H01M 8/00

Claims (1)

  1. (57) [Claim 1] A three-phase AC motor for driving a vehicle, and an inverter for converting DC power to AC power and supplying the converted AC power to the three-phase AC motor. A power source of the three-phase AC motor, comprising a secondary battery and a power battery connected to the three-phase AC motor via the inverter, a fuel cell that constantly generates a constant output, and a booster circuit. power connected energy battery and before disappeared flannel <br/> fuel supply response product discharge pump of the energy battery is connected via a DC-DC converter ghee battery in parallel with the power battery via DC power source constituted by a vehicle auxiliary battery, signal generation means for generating a control signal of the inverter, a key switch A battery that controls the booster circuit based on the current or voltage of any of the input currents of the power battery, the energy battery, the three-phase AC motor, or the inverter, and maintains the voltage of the DC power supply in a predetermined range. Current / voltage control means, and when the key switch is off and the charge amount of the power battery is equal to or less than a predetermined value, the booster circuit is turned on to charge the power battery from the energy battery,
    When the key switch is off and the charge amount is larger than the predetermined value, the booster circuit is turned off to stop the charging, and furthermore, the key switch is off and the charge amount of the vehicle auxiliary battery is a predetermined value. DC when
    Charge control means for controlling a DC converter to charge the auxiliary battery for the vehicle from the energy battery, wherein the battery current / voltage control means includes a key switch on and the vehicle A driving apparatus for an electric vehicle, wherein the operation of the booster circuit is turned off in a regenerative mode in which energy is recovered to the power battery, and charging of the power battery from the energy battery is stopped. 2. A three-phase AC motor for driving a vehicle, an inverter for converting DC power to AC power, and supplying the converted AC power to the three-phase AC motor, and a power source for the three-phase AC motor. A power battery consisting of a secondary battery and connected to the three-phase AC motor through the main contactor and the inverter, a fuel cell that constantly generates a constant output, and a power battery through a booster circuit. A DC power supply comprising an energy battery connected in parallel and a vehicle auxiliary battery connected to the energy battery via a DC-DC converter and serving as a power supply for a fuel supply reaction product discharge pump of the energy battery. A current sensor and a speed sensor for detecting a current and a rotation speed of the three-phase AC motor. An AC current command generating means for generating a three-phase AC current command based on the accelerator opening and the output of the speed sensor; anda control signal of the inverter based on the three-phase AC current command and the output of the current sensor. Generating a PWM signal generating means, a key switch, and controlling the boosting circuit based on any one of an input current and a voltage of the power battery, the energy battery, the three-phase AC motor or the inverter, Battery current / voltage control means for maintaining the voltage of the DC power supply in a predetermined range; and when the key switch is off and the charge amount of the power battery is equal to or less than a predetermined value, the booster circuit is turned on and the energy battery is While charging the power battery, the key switch is turned off and the Amount stopped off and the charging of the booster circuit is greater than said predetermined value, further when charging amount of the key switch is turned off at and auxiliary battery for the vehicle is below a predetermined value the DC-
    Charge control means for controlling a DC converter to charge the auxiliary battery for the vehicle from the energy battery, wherein the battery current / voltage control means is configured such that the key switch is on and the vehicle A driving device for an electric vehicle, wherein the operation of the booster circuit is turned off when the power battery is in a regenerative mode, and charging of the power battery from the energy battery is stopped. 3. The driving device for an electric vehicle according to claim 1, wherein the booster circuit includes a switching transistor for short-circuiting the energy battery, a reactor and a backflow prevention diode. A driving device for an electric vehicle, comprising: 4. An electric vehicle driving apparatus according to claim 1, wherein said vehicle includes auxiliary equipment including an electric motor for an air conditioner, an electric motor for power steering, and an electric motor for vacuum. Auxiliary equipment
    A driving device for an electric vehicle, wherein the driving device is driven by using the energy battery as a power source. 5. A power battery formed of a secondary battery, and the energy battery through a booster circuit connected in parallel to the power battery with consisting fuel cells and
    Via a DC-DC converter to the energy battery
    Connected to the fuel of the energy battery
    Auxiliary bus for vehicle, which is the power supply for the supply reaction product discharge pump
    The DC power of the DC power source configured by the battery is converted into AC power, and this is supplied to the motor to drive the motor.
    A drive control method for an electric vehicle for driving a vehicle, wherein the booster circuit is controlled based on a current or voltage of any one of the power battery, the energy battery, and the electric motor to set a voltage of the DC power supply to a predetermined value. maintained in the range of, when said key switch is the amount of charge off a and the power battery is below a predetermined value, and turns on the step-up circuit, to perform the charging of the power battery from the energy battery, said key switch There can off a and the charge amount is larger than the predetermined value, turns off the booster circuit, the charging is stopped, the charge amount before Symbol key switch is off and the auxiliary battery for the vehicle below a predetermined value -out Noto, charging from the DC-DC converter control to the energy battery to the vehicle auxiliary battery When the key switch is on and the vehicle is in a regenerative mode for recovering braking energy to the power battery, the operation of the booster circuit is turned off, and charging of the power battery from the energy battery is stopped. br /> allowed Ru, drive control method for an electric vehicle, characterized in that. 6. The method for controlling driving of an electric vehicle according to claim 5, wherein the charging from the energy battery is continued until the voltage of the vehicle auxiliary battery reaches a predetermined value even after the key switch is turned off. A drive control method for an electric vehicle, characterized by continuing.
JP8943595A 1995-04-14 1995-04-14 Drive device and drive control method for electric vehicle Expired - Lifetime JP3487952B2 (en)

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Applications Claiming Priority (3)

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JP8943595A JP3487952B2 (en) 1995-04-14 1995-04-14 Drive device and drive control method for electric vehicle
US08/630,080 US5780980A (en) 1995-04-14 1996-04-09 Electric car drive system provided with hybrid battery and control method
JP2001103869A JP2001339872A (en) 1995-04-14 2001-04-02 Drive apparatus and control method for electric car with hybrid battery

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JP3487952B2 true JP3487952B2 (en) 2004-01-19

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JP3328509B2 (en) * 1996-05-29 2002-09-24 株式会社日立製作所 Electric vehicle drive system
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